899479717 has 4 divisors (see below), whose sum is σ = 899822176. Its totient is φ = 899137260.

The previous prime is 899479687. The next prime is 899479727. The reversal of 899479717 is 717974998.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 899479717 - 2¹¹ = 899477669 is a prime.

It is a super-2 number, since 2×899479717² = 1618127522588800178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899479727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167259 + ... + 172552.

It is an arithmetic number, because the mean of its divisors is an integer number (224955544).

Almost surely, 2^899479717 is an apocalyptic number.

It is an amenable number.

899479717 is a deficient number, since it is larger than the sum of its proper divisors (342459).

899479717 is a wasteful number, since it uses less digits than its factorization.

899479717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342458.

The product of its digits is 8001504, while the sum is 61.

The square root of 899479717 is about 29991.3273630895. The cubic root of 899479717 is about 965.3033014420.

The spelling of 899479717 in words is "eight hundred ninety-nine million, four hundred seventy-nine thousand, seven hundred seventeen".